1,3-二-(5-甲氧羰基戊基)脲

4-(hydroxymethyl)-4-methyl-1,3-oxazolidin-2-one

(2,4-dimethyl-1H-pyrrol-3-yl)-imidazol-1-ylmethanone

5-氯-6-甲基苯并咪唑-2-酮

4-羟基-6-(3-吡啶)-2H-吡喃-2-酮